The Influence of Mineral Additions and Chemical Admixtures on the Shear Thickening Flow Behavior of Powder Type Self-Compacting Concrete (SCC) is Studied by Means of a Wide-Gap Concentric Cylinder Rheometer. the Couette Inverse Problem is Treated by Means of the Integration Method in Order to Derive the Flow Curve Τ(Γ̇) from the Torque Measurements. According to the Experimental Results, the Shear Thickening Effect is Found to Be Strongly Influenced by the Addition of the Chemical Admixture (A Polycarboxylate Ether based Superplasticizer), Whereas Mineral Additions Were Found to Modify the Intensity of Shear Thickening. the Limestone, Quartzite and Fly Ash Addition Used in This Research Project, Respectively Increase, Unalter and Decrease the Shear Thickening Intensity. the Powder Volume and the Available Amount of Free Water Proved to Have a Major Impact on the Viscosity of the Powder Type SCC Mixes. Increasing the Powder Volume or Decreasing the Amount of Free Water Results in an Increased Viscosity of the SCC Mix. © 2008 Elsevier Ltd. All Rights Reserved.


Civil, Architectural and Environmental Engineering

Keywords and Phrases

Admixture (D); Filler (D); Fresh concrete (A); Rheology (A); Shear thickening

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Document Type

Article - Journal

Document Version


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© 2023 Elsevier, All rights reserved.

Publication Date

01 Mar 2009